启动时设备上的 Android 地图应用程序崩溃

Question

通过 Android Studio 使用 Google Maps API 时，我反复遇到这个问题。 它编译得很好，没有错误，但是在我的设备上运行时，它总是在启动时崩溃。 我使用的是华为 P90 Lite（棉花糖 6.0）。

非常感谢你的帮助！ 乔·S。

这是代码：

地图活动.java

package com.example.jonathan.parq01;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.icu.text.SimpleDateFormat;
import android.os.Build;
import android.support.annotation.RequiresApi;
import  android.support.v4.app.FragmentActivity;
import android.os.Bundle;

import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

import java.util.Date;

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;

private SensorManager sensorManager;
private Sensor accelerometer;
private float last_x, last_y, last_z;

long lastUpdate = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);

    // setup the accelerometer
    sensorManager = (SensorManager) this.getSystemService(Context.SENSOR_SERVICE);
    accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
    sensorManager.registerListener((SensorEventListener) this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
}

@RequiresApi(api = Build.VERSION_CODES.N)
public void OnSensorChanged(SensorEvent event) {
    Sensor mySensor = event.sensor;

    if (mySensor.getType() == Sensor.TYPE_ACCELEROMETER) {
        float x = event.values[0]; // x value
        float y = event.values[1]; // y value
        float z = event.values[2]; // z value

        long curTime = System.currentTimeMillis();

        if (Math.abs(curTime - lastUpdate) > 2000)
        {
            SimpleDateFormat date = new SimpleDateFormat("dd-MM-yyyy");
            String currentDateTime = date.format(new Date());

            lastUpdate = curTime;

            if (Math.abs(last_x - x) > 10)
            {
                mMap.addMarker(new MarkerOptions()
                        .position(new LatLng(37.23062, -80.42178))
                        .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ORANGE))
                        .title("Hey you moved the x axis" + currentDateTime));
            }

            if (Math.abs(last_y - y) > 10)
            {
                mMap.addMarker(new MarkerOptions()
                        .position(new LatLng(37.26062, -80.42188))
                        .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED))
                        .title("Hey you moved the y axis" + currentDateTime));
            }

            if (Math.abs(last_z - z) > 10)
            {
                mMap.addMarker(new MarkerOptions()
                        .position(new LatLng(37.24062, -80.43178))
                        .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
                        .title("Hey you moved the z axis" + currentDateTime));
            }

            last_x = x;
            last_y = y;
            last_z = z;
        }
    }
}

public void OnAccuracyChanged(Sensor sensor, int accuracy) {

}


/**
 * Manipulates the map once available.
 * This callback is triggered when the map is ready to be used.
 * This is where we can add markers or lines, add listeners or move the camera. In this case,
 * we just add a marker near Sydney, Australia.
 * If Google Play services is not installed on the device, the user will be prompted to install
 * it inside the SupportMapFragment. This method will only be triggered once the user has
 * installed Google Play services and returned to the app.
 */
@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    // Add a marker in Sydney and move the camera
    LatLng sydney = new LatLng(-34, 151);
    mMap.addMarker(new MarkerOptions().position(new LatLng(37.229, 80.424)).title("Virginia Tech"));
    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(37.229, 80.424), 14.9f));
}
}

活动地图.xml

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.jonathan.parq01.MapsActivity" />

我还将 Google Maps API 密钥添加到相应的 xml 文件中。

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.jonathan.parq01">

<!--
     The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
     Google Maps Android API v2, but you must specify either coarse or fine
     location permissions for the 'MyLocation' functionality. 
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

    <!--
         The API key for Google Maps-based APIs is defined as a string resource.
         (See the file "res/values/google_maps_api.xml").
         Note that the API key is linked to the encryption key used to sign the APK.
         You need a different API key for each encryption key, including the release key that is used to
         sign the APK for publishing.
         You can define the keys for the debug and release targets in src/debug/ and src/release/. 
    -->
    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="@string/google_maps_key" />

    <activity
        android:name=".MapsActivity"
        android:label="@string/title_activity_maps">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

堆栈跟踪：

03-01 15:41:16.021 9132-9132/? I/art: Late-enabling -Xcheck:jni
03-01 15:41:16.038 9132-9138/? I/art: Debugger is no longer active
03-01 15:41:16.079 9132-9132/? W/System: ClassLoader referenced unknown        path: /data/app/com.example.jonathan.parq01-2/lib/arm64
03-01 15:41:16.086 9132-9132/? I/InstantRun: Instant Run Runtime started. Android package is com.example.jonathan.parq01, real application class is null.
03-01 15:41:16.383 9132-9132/? W/System: ClassLoader referenced unknown path: /data/app/com.example.jonathan.parq01-2/lib/arm64
03-01 15:41:16.415 9132-9132/? I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
03-01 15:41:16.526 9132-9132/? I/HwCust: Constructor found for class android.app.HwCustHwWallpaperManagerImpl
03-01 15:41:16.603 9132-9132/? I/zzai: Making Creator dynamically
03-01 15:41:16.668 9132-9132/? W/System: ClassLoader referenced unknown path: /data/user/0/com.google.android.gms/app_chimera/m/00000027/n/arm64-v8a
03-01 15:41:16.679 9132-9132/? I/System.out: [/system/bin/getprop,    debug.mapview.logs]
03-01 15:41:16.679 9132-9132/? I/System.out: null
03-01 15:41:16.679 9132-9132/? I/System.out: null
03-01 15:41:16.679 9132-9132/? I/System.out: Calling by::className:com.google.maps.api.android.lib6.common.q  MethodName:a
03-01 15:41:16.704 9132-9132/? I/Google Maps Android API: Google Play services client version: 10298000
03-01 15:41:16.708 9132-9132/? I/Google Maps Android API: Google Play services package version: 10298448
03-01 15:41:16.708 9132-9132/? I/System.out: [/system/bin/getprop, debug.mapview.renderer]
03-01 15:41:16.708 9132-9132/? I/System.out: null
03-01 15:41:16.708 9132-9132/? I/System.out: null
03-01 15:41:16.709 9132-9132/? I/System.out: Calling by::className:com.google.maps.api.android.lib6.common.q  MethodName:a
03-01 15:41:16.732 9132-9132/? I/System.out: [/system/bin/getprop, debug.mapview.streetview]
03-01 15:41:16.732 9132-9132/? I/System.out: null
03-01 15:41:16.732 9132-9132/? I/System.out: null
03-01 15:41:16.732 9132-9132/? I/System.out: Calling by::className:com.google.maps.api.android.lib6.common.q  MethodName:a
03-01 15:41:16.781 9132-9132/? I/System.out: [/system/bin/getprop, debug.mapview.gmmserver]
03-01 15:41:16.781 9132-9132/? I/System.out: null
03-01 15:41:16.781 9132-9132/? I/System.out: null
03-01 15:41:16.782 9132-9132/? I/System.out: Calling by::className:com.google.maps.api.android.lib6.common.q  MethodName:a
03-01 15:41:16.952 9132-9157/? I/System: core_booster, getBoosterConfig = false
03-01 15:41:16.982 9132-9157/? I/System: core_booster, getBoosterConfig = false
03-01 15:41:17.316 9132-9132/? I/Process: Sending signal. PID: 9132 SIG: 9

Answer 1

您需要获取 SHA1 密钥来制作谷歌地图应用程序。您可以通过在命令提示符下键入以下命令来获取您的 sha1 密钥：-

keytool -list -v -keystore "%USERPROFILE%.android\\debug.keystore" -alias androiddebugkey -storepass android -keypass android

Answer 2

也许创建一个密钥库并将其放置在需要的地方。 ~我的 Android Studio 有一些类似的东西，它总是在错误的位置寻找密钥库文件。

所需的文件仍然存在，但需要从它引用的文件夹“Above”中复制。 也就是说，在父文件夹的目录中，有文件，Android Studio 在这个文件夹的子文件夹中查找（嵌套错误）

你可以把正确的文件，我的是（~.android.android\\debug.keystore），然后把它复制到正确的目录，app~.android.android\\debug.keystore.~

这对我帮助很大，希望它也适用于你。

来自各种 Stack Overflow 研究，最终以试错告终！